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  • Thank you for detailed answer, that's exactly what I wanted to know. So it's The voltage regulator circuit on motherboard took the 'brunt'. Do you think nothing bad happened to PSU, since it has protections?
    – Baltar
    Commented Nov 5, 2016 at 17:23
  • You answer tells what I asked. What happens after plugging in 6+2 pin power cable into 2x4pin for CPU into motherboard. The answer is short circuit and voltage regulator circuit taking the brunt. I don't understand why this question is considered too broad, since it has exact answer. Maybe I didn't tell exact model of PSU and motherboard, but it's a short circuit no matter what motherboard you have if you put these cables like I did.
    – Baltar
    Commented Nov 5, 2016 at 17:31
  • I agree; there is a question from a few years ago where someone plugged the eps into their graphics card and it wasn't characterized as too broad. In any event hopefully the info helps.
    – Argonauts
    Commented Nov 5, 2016 at 18:51
  • "You can't easily put a 8 pin PCIe power cable into a 8 pin EPS 12V MB connector, they are keyed differently." - your first sentence is 100% wrong - look at the diagram again, the beveled edge keys fit easily into the square keys.
    – rayzinnz
    Commented May 21, 2020 at 17:55